About Hot Chillys Hot Chillys has led the performance apparel industry for over twenty years with moisture managing base layer technology. When founded in 1985 Hot Chillys revolutionized the ski market with performance ski warm wear base layer underwear incorporating fabric technologies previously found primarily in running apparel. Building from the base layer up Hot Chillys currently offers both body fit and relaxed fit performance apparel featuring the best moisture management and high tech fabrications available for every season and activity whether snowboarding climbing skiing snowshoeing cycling running or indoor fitness classes at the gym.